linux-kernel - [PATCH v3 24/27] perf tests: Support 'Session topology' test for hybrid

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Date:   Mon, 29 Mar 2021 15:00:43 +0800
From:   Jin Yao <yao.jin@...ux.intel.com>
To:     acme@...nel.org, jolsa@...nel.org, peterz@...radead.org,
        mingo@...hat.com, alexander.shishkin@...ux.intel.com
Cc:     Linux-kernel@...r.kernel.org, ak@...ux.intel.com,
        kan.liang@...el.com, yao.jin@...el.com,
        Jin Yao <yao.jin@...ux.intel.com>
Subject: [PATCH v3 24/27] perf tests: Support 'Session topology' test for hybrid

Force to create one event "cpu_core/cycles/" by default,
otherwise in evlist__valid_sample_type, the checking of
'if (evlist->core.nr_entries == 1)' would be failed.

  # ./perf test 41
  41: Session topology                                                : Ok

Signed-off-by: Jin Yao <yao.jin@...ux.intel.com>
---
v3:
 - No functional change.

 tools/perf/tests/topology.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/tools/perf/tests/topology.c b/tools/perf/tests/topology.c
index 050489807a47..30b4acb08d35 100644
--- a/tools/perf/tests/topology.c
+++ b/tools/perf/tests/topology.c
@@ -8,6 +8,7 @@
 #include "session.h"
 #include "evlist.h"
 #include "debug.h"
+#include "pmu.h"
 #include <linux/err.h>
 
 #define TEMPL "/tmp/perf-test-XXXXXX"
@@ -40,7 +41,14 @@ static int session_write_header(char *path)
 	session = perf_session__new(&data, false, NULL);
 	TEST_ASSERT_VAL("can't get session", !IS_ERR(session));
 
-	session->evlist = evlist__new_default();
+	if (!perf_pmu__has_hybrid()) {
+		session->evlist = evlist__new_default();
+	} else {
+		struct parse_events_error err;
+
+		session->evlist = evlist__new();
+		parse_events(session->evlist, "cpu_core/cycles/", &err);
+	}
 	TEST_ASSERT_VAL("can't get evlist", session->evlist);
 
 	perf_header__set_feat(&session->header, HEADER_CPU_TOPOLOGY);
-- 
2.17.1